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Question 1 of 10
1. Question
6 point(s)Find the answer

2×10^{3} + 6×10^{4}
= ×10^{4} + 6×10^{ }
= ×10^{ }
CorrectIncorrect 

Question 2 of 10
2. Question
4 point(s)Find the answer

6×10^{8} + 3×10^{6}
= 6×10^{8} + ×10^{8}
= ×10^{8}
CorrectIncorrect 

Question 3 of 10
3. Question
6 point(s)Find the answer

5.2×10^{2} + 4×10^{3}
= 5.2×10^{2} + ×10^{2}
= ×10^{2}
CorrectIncorrect 

Question 4 of 10
4. Question
6 point(s)Find the answer

3×10^{4} + 9×10^{2}
= ×10^{ } + ×10^{ }
= ×10^{ }
CorrectIncorrect 

Question 5 of 10
5. Question
6 point(s)Find the answer

3.2×10^{6} + 4.8×10^{7}
= ×10^{ } + 4.8×10^{7}
= ×10^{ }
CorrectIncorrect 

Question 6 of 10
6. Question
6 point(s)Find the answer

8×10^{3} – 9×10^{2}
= 8×10^{3} – ×10^{3}
= ×10^{3}
CorrectIncorrect 

Question 7 of 10
7. Question
6 point(s)Find the answer

1.42×10^{5} – 8×10^{3}
= 1.42×10^{5} – ×10^{5}
= ×10^{5}
CorrectIncorrect 

Question 8 of 10
8. Question
6 point(s)Find the answer

3×10^{2} – 1.2×10^{3}
= ×10^{3} – 1.2×10^{3}
= ×10^{3}
= ×10^{ }
CorrectIncorrect 

Question 9 of 10
9. Question
6 point(s)Find the answer

4.5×10^{2} – 5×10^{1}
= ×10^{1} – 5×10^{1}
= ×10^{1}
CorrectIncorrect 

Question 10 of 10
10. Question
6 point(s)Find the answer

5×10^{3} – 6.2×10^{1}
= ×10^{1} – 6.2×10^{1}
= ×10^{1}
CorrectIncorrect 